Home / 860,132.80-1,187,055.04-478,195.12

Finding the Fourth Proportional to 860,132.80, 1,187,055.04 and 478,195.12

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Solution

The fourth proportional to 860,132.80, 1,187,055.04 and 478,195.12 is: 659,949.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,132.80 : 1,187,055.04 = 478,195.12 : x
  2. Step 2: Convert to fraction form
    860,132.80/1,187,055.04 = 478,195.12/x
  3. Step 3: Cross multiply
    860,132.80x = 1,187,055.04 × 478,195.12
  4. Step 4: Simplify right side
    860,132.80x = 567,643,927,299.41
  5. Step 5: Solve for x
    x = 567,643,927,299.41/860,132.80
  6. Step 6: Final answer
    x = 659,949.17

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.